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International Comfort Products GPFM36K060F Limit Switch
A normal limit switch is a switch in the heat exchanger that can determine if and when the air is warm enough that it can be circulated throughout the house. This is important because if the air is not warm enough then the house will never get warm enough.
Key symptoms of a worsening critical limit switch
- The system begins to ramp up but then stops more often than not
- The HVAC system refuses to kick in or continue to run even though the desired temperature has not been attained
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